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ES Ch2 Tools of Environmental Science Flashcards | StudBud
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ES Ch2 Tools of Environmental Science
ES Ch2 Tools of Environmental Science
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Holt Environmental Science, Chapter 2 Review
Flashcards
31 cards
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Practice quiz
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Questions
31
Answers
1
The group that does not receive the experimental treatment in an experiment is the
variable
data
experimental group
control group
2
What essential characteristics does a good experiment have? (More than one answer. Choose any one.)
Single control group is given the experimental variable
a control is used
a single variable is tested
3
What is the first thing you should do when making a decision?
draw conclusions
gather information
consider values
make a prediction
4
Which step in the experimental method are scientists conducting when they photograph whales?
observing
hypothesizing
analyzing data
drawing conclusions
5
The classification and collection of data that are in the form of numbers is called
probability
statistics
mean
distribution
6
This is a testable explanation for an observation.
theory
prediction
hypothesis
scientific law
7
What step in the decision-making model are you taking when you consider a possible outcome?
exploring consequences
making a decision
considering values
gathering information
8
Three-dimensional models you can touch are referred to as
mathematical models
conceptual models
graphical models
physical models
9
The average mass of a penguin in a colony is an example of
statistical population
mean
distribution
sample size
10
Before you can make a decision using a decision-making model, what step must you take? (read all options carefully)
all of these must be done
gather information
Explore the consequences of each action
consider which values apply to the issue
11
A group of similar things that a scientist is interested in learning about is
a statistical population
a sample
a control group
an experimental group
12
Maps and charts are examples of
Mathematical models
physical models
graphical models
conceptual models
13
This consists of a series of steps used by scientists to identify and answer questions .
predictions
scientific method
statistical populations
graphical model
14
In a scientific investigation, the number of objects or events being sampled should be
equal to the statistical population
large so the whole population can be estimated
equal to the mean number of objects not being sampled
small, just 1-2 individuals
15
Information gathered by using the senses is known as
statistics
an observation
a sample
data
16
Scientists use statistics to _____.
communicate ideas to each other
graph data
analyze data
17
the factor of interest in an experiment is called the
control group
hypothesis
variable
experimental group
18
A good hypothesis is more than a guess because it
follows from what you know
makes logical sense
is testable
is based on intuition rather than observation
19
When it's unethical or impossible to conduct experiments, scientists test by examining
observations
control groups
variables
correlations
20
Which of the following correctly lists the steps of the experimental method in order?
remain skeptical-organize data-analyze data
be curious-imagine-see patterns-observe-predict
observe-hypothesize-predict-experiment-communicate results
draw conclusions-be open-minded-communicate results
21
A 3D model of a chupacabra is an example of a __________ model.
mathematical
graphical
conceptual
physical
22
The chance that an earthquake will occur in St. Elizabeth this year is an example of a
correlation
distribution
risk
skepticism
23
Considering what will add to our understanding of the natural world when making a decision...
considers a scientific value
considers an aesthetic value
considers an ethical/moral value
considers an environmental value
24
This is a systematic process you can use to help you make decisions about environmental issues.
probability
data
decision-making model
correlations
25
The group that receives the independent variable is called the
control group
experimental group
26
If you are building a dam, what is an example of a question that addresses an economic value?
Will building the dam destroy natural resources?
How many jobs will building the dam create?
Will the dam provide new leisure activities?
Is it right to build a dam here?
27
The final steps of the experimental method in their usual order are
observe-hypothesize-draw conclusions
repeat experiment-communicate results-draw conclusions
draw conclusions-repeat experiment-communicate results
draw conclusions-analyze data-repeat experiment
28
These could be positive or negative and must be explored before making a decision.
consequences
theories
hypotheses
risks
29
Why are mathematical models important? (read all options)
can be used to create useful digital images ("false color")
represent how a system or process works (global warming)
Useful in situations with many variables (like weather)
all of these explain why mathematical models are important
30
A model that shows the correlation between the components of a system is a
physical model
graphical model
mathematical model
conceptual model
31
This group does not receive the variable in an experiment.
experimental group
statistical group
sample group
control group